Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 2, 2012. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 1450 | N17 | E19 | 04 | 0020 | Beta | Apr 5, 2012 | Apr 12, 2012 | Apr 25, 2012 |
| № 1449 | S18 | W63 | 03 | 0040 | Beta | Mar 29, 2012 | Apr 5, 2012 | Apr 19, 2012 |
| № 1445 | S23 | W48 | 01 | 0120 | Alpha | Mar 31, 2012 | Apr 6, 2012 | Apr 20, 2012 |
| № 1443 | N14 | W77 | 02 | 0020 | Beta | Mar 28, 2012 | Apr 4, 2012 | Apr 18, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to April 2012. The gray background is the average SSN index.
